Helicopter controls

Guys ive just recently finished the story missions (and most of the extra missions) and ive decided to change the helicopter controls to the old (classic) controls, and im mad i didnt do it sooner... but i cant quite get the hang of the upwards and downwards controls (iykwim)

P.S. If anyone has anything else to try out (after finishing the game), id like to know, just to make it more immersive...